diff options
Diffstat (limited to 'fs/reiserfs/item_ops.c')
| -rw-r--r-- | fs/reiserfs/item_ops.c | 979 |
1 files changed, 472 insertions, 507 deletions
diff --git a/fs/reiserfs/item_ops.c b/fs/reiserfs/item_ops.c index 0ce33db..e237cd6 100644 --- a/fs/reiserfs/item_ops.c +++ b/fs/reiserfs/item_ops.c @@ -14,776 +14,741 @@ ////////////////////////////////////////////////////////////////////////////// // stat data functions // -static int sd_bytes_number (struct item_head * ih, int block_size) +static int sd_bytes_number(struct item_head *ih, int block_size) { - return 0; + return 0; } -static void sd_decrement_key (struct cpu_key * key) +static void sd_decrement_key(struct cpu_key *key) { - key->on_disk_key.k_objectid --; - set_cpu_key_k_type (key, TYPE_ANY); - set_cpu_key_k_offset(key, (loff_t)(-1)); + key->on_disk_key.k_objectid--; + set_cpu_key_k_type(key, TYPE_ANY); + set_cpu_key_k_offset(key, (loff_t) (-1)); } -static int sd_is_left_mergeable (struct reiserfs_key * key, unsigned long bsize) +static int sd_is_left_mergeable(struct reiserfs_key *key, unsigned long bsize) { - return 0; + return 0; } - - -static char * print_time (time_t t) +static char *print_time(time_t t) { - static char timebuf[256]; + static char timebuf[256]; - sprintf (timebuf, "%ld", t); - return timebuf; + sprintf(timebuf, "%ld", t); + return timebuf; } - -static void sd_print_item (struct item_head * ih, char * item) +static void sd_print_item(struct item_head *ih, char *item) { - printk ("\tmode | size | nlinks | first direct | mtime\n"); - if (stat_data_v1 (ih)) { - struct stat_data_v1 * sd = (struct stat_data_v1 *)item; + printk("\tmode | size | nlinks | first direct | mtime\n"); + if (stat_data_v1(ih)) { + struct stat_data_v1 *sd = (struct stat_data_v1 *)item; - printk ("\t0%-6o | %6u | %2u | %d | %s\n", sd_v1_mode(sd), - sd_v1_size(sd), sd_v1_nlink(sd), sd_v1_first_direct_byte(sd), - print_time( sd_v1_mtime(sd) ) ); - } else { - struct stat_data * sd = (struct stat_data *)item; + printk("\t0%-6o | %6u | %2u | %d | %s\n", sd_v1_mode(sd), + sd_v1_size(sd), sd_v1_nlink(sd), + sd_v1_first_direct_byte(sd), + print_time(sd_v1_mtime(sd))); + } else { + struct stat_data *sd = (struct stat_data *)item; - printk ("\t0%-6o | %6Lu | %2u | %d | %s\n", sd_v2_mode(sd), - (unsigned long long)sd_v2_size(sd), sd_v2_nlink(sd), - sd_v2_rdev(sd), print_time(sd_v2_mtime(sd))); - } + printk("\t0%-6o | %6Lu | %2u | %d | %s\n", sd_v2_mode(sd), + (unsigned long long)sd_v2_size(sd), sd_v2_nlink(sd), + sd_v2_rdev(sd), print_time(sd_v2_mtime(sd))); + } } -static void sd_check_item (struct item_head * ih, char * item) +static void sd_check_item(struct item_head *ih, char *item) { - // FIXME: type something here! + // FIXME: type something here! } - -static int sd_create_vi (struct virtual_node * vn, - struct virtual_item * vi, - int is_affected, - int insert_size) +static int sd_create_vi(struct virtual_node *vn, + struct virtual_item *vi, + int is_affected, int insert_size) { - vi->vi_index = TYPE_STAT_DATA; - //vi->vi_type |= VI_TYPE_STAT_DATA;// not needed? - return 0; + vi->vi_index = TYPE_STAT_DATA; + //vi->vi_type |= VI_TYPE_STAT_DATA;// not needed? + return 0; } - -static int sd_check_left (struct virtual_item * vi, int free, - int start_skip, int end_skip) +static int sd_check_left(struct virtual_item *vi, int free, + int start_skip, int end_skip) { - if (start_skip || end_skip) - BUG (); - return -1; + if (start_skip || end_skip) + BUG(); + return -1; } - -static int sd_check_right (struct virtual_item * vi, int free) +static int sd_check_right(struct virtual_item *vi, int free) { - return -1; + return -1; } -static int sd_part_size (struct virtual_item * vi, int first, int count) +static int sd_part_size(struct virtual_item *vi, int first, int count) { - if (count) - BUG (); - return 0; + if (count) + BUG(); + return 0; } -static int sd_unit_num (struct virtual_item * vi) +static int sd_unit_num(struct virtual_item *vi) { - return vi->vi_item_len - IH_SIZE; + return vi->vi_item_len - IH_SIZE; } - -static void sd_print_vi (struct virtual_item * vi) +static void sd_print_vi(struct virtual_item *vi) { - reiserfs_warning (NULL, "STATDATA, index %d, type 0x%x, %h", - vi->vi_index, vi->vi_type, vi->vi_ih); + reiserfs_warning(NULL, "STATDATA, index %d, type 0x%x, %h", + vi->vi_index, vi->vi_type, vi->vi_ih); } static struct item_operations stat_data_ops = { - .bytes_number = sd_bytes_number, - .decrement_key = sd_decrement_key, - .is_left_mergeable = sd_is_left_mergeable, - .print_item = sd_print_item, - .check_item = sd_check_item, - - .create_vi = sd_create_vi, - .check_left = sd_check_left, - .check_right = sd_check_right, - .part_size = sd_part_size, - .unit_num = sd_unit_num, - .print_vi = sd_print_vi + .bytes_number = sd_bytes_number, + .decrement_key = sd_decrement_key, + .is_left_mergeable = sd_is_left_mergeable, + .print_item = sd_print_item, + .check_item = sd_check_item, + + .create_vi = sd_create_vi, + .check_left = sd_check_left, + .check_right = sd_check_right, + .part_size = sd_part_size, + .unit_num = sd_unit_num, + .print_vi = sd_print_vi }; - - ////////////////////////////////////////////////////////////////////////////// // direct item functions // -static int direct_bytes_number (struct item_head * ih, int block_size) +static int direct_bytes_number(struct item_head *ih, int block_size) { - return ih_item_len(ih); + return ih_item_len(ih); } - // FIXME: this should probably switch to indirect as well -static void direct_decrement_key (struct cpu_key * key) +static void direct_decrement_key(struct cpu_key *key) { - cpu_key_k_offset_dec (key); - if (cpu_key_k_offset (key) == 0) - set_cpu_key_k_type (key, TYPE_STAT_DATA); + cpu_key_k_offset_dec(key); + if (cpu_key_k_offset(key) == 0) + set_cpu_key_k_type(key, TYPE_STAT_DATA); } - -static int direct_is_left_mergeable (struct reiserfs_key * key, unsigned long bsize) +static int direct_is_left_mergeable(struct reiserfs_key *key, + unsigned long bsize) { - int version = le_key_version (key); - return ((le_key_k_offset (version, key) & (bsize - 1)) != 1); + int version = le_key_version(key); + return ((le_key_k_offset(version, key) & (bsize - 1)) != 1); } - -static void direct_print_item (struct item_head * ih, char * item) +static void direct_print_item(struct item_head *ih, char *item) { - int j = 0; + int j = 0; // return; - printk ("\""); - while (j < ih_item_len(ih)) - printk ("%c", item[j++]); - printk ("\"\n"); + printk("\""); + while (j < ih_item_len(ih)) + printk("%c", item[j++]); + printk("\"\n"); } - -static void direct_check_item (struct item_head * ih, char * item) +static void direct_check_item(struct item_head *ih, char *item) { - // FIXME: type something here! + // FIXME: type something here! } - -static int direct_create_vi (struct virtual_node * vn, - struct virtual_item * vi, - int is_affected, - int insert_size) +static int direct_create_vi(struct virtual_node *vn, + struct virtual_item *vi, + int is_affected, int insert_size) { - vi->vi_index = TYPE_DIRECT; - //vi->vi_type |= VI_TYPE_DIRECT; - return 0; + vi->vi_index = TYPE_DIRECT; + //vi->vi_type |= VI_TYPE_DIRECT; + return 0; } -static int direct_check_left (struct virtual_item * vi, int free, - int start_skip, int end_skip) +static int direct_check_left(struct virtual_item *vi, int free, + int start_skip, int end_skip) { - int bytes; + int bytes; - bytes = free - free % 8; - return bytes ?: -1; + bytes = free - free % 8; + return bytes ? : -1; } - -static int direct_check_right (struct virtual_item * vi, int free) +static int direct_check_right(struct virtual_item *vi, int free) { - return direct_check_left (vi, free, 0, 0); + return direct_check_left(vi, free, 0, 0); } -static int direct_part_size (struct virtual_item * vi, int first, int count) +static int direct_part_size(struct virtual_item *vi, int first, int count) { - return count; + return count; } - -static int direct_unit_num (struct virtual_item * vi) +static int direct_unit_num(struct virtual_item *vi) { - return vi->vi_item_len - IH_SIZE; + return vi->vi_item_len - IH_SIZE; } - -static void direct_print_vi (struct virtual_item * vi) +static void direct_print_vi(struct virtual_item *vi) { - reiserfs_warning (NULL, "DIRECT, index %d, type 0x%x, %h", - vi->vi_index, vi->vi_type, vi->vi_ih); + reiserfs_warning(NULL, "DIRECT, index %d, type 0x%x, %h", + vi->vi_index, vi->vi_type, vi->vi_ih); } static struct item_operations direct_ops = { - .bytes_number = direct_bytes_number, - .decrement_key = direct_decrement_key, - .is_left_mergeable = direct_is_left_mergeable, - .print_item = direct_print_item, - .check_item = direct_check_item, - - .create_vi = direct_create_vi, - .check_left = direct_check_left, - .check_right = direct_check_right, - .part_size = direct_part_size, - .unit_num = direct_unit_num, - .print_vi = direct_print_vi + .bytes_number = direct_bytes_number, + .decrement_key = direct_decrement_key, + .is_left_mergeable = direct_is_left_mergeable, + .print_item = direct_print_item, + .check_item = direct_check_item, + + .create_vi = direct_create_vi, + .check_left = direct_check_left, + .check_right = direct_check_right, + .part_size = direct_part_size, + .unit_num = direct_unit_num, + .print_vi = direct_print_vi }; - - ////////////////////////////////////////////////////////////////////////////// // indirect item functions // -static int indirect_bytes_number (struct item_head * ih, int block_size) +static int indirect_bytes_number(struct item_head *ih, int block_size) { - return ih_item_len(ih) / UNFM_P_SIZE * block_size; //- get_ih_free_space (ih); + return ih_item_len(ih) / UNFM_P_SIZE * block_size; //- get_ih_free_space (ih); } - // decrease offset, if it becomes 0, change type to stat data -static void indirect_decrement_key (struct cpu_key * key) +static void indirect_decrement_key(struct cpu_key *key) { - cpu_key_k_offset_dec (key); - if (cpu_key_k_offset (key) == 0) - set_cpu_key_k_type (key, TYPE_STAT_DATA); + cpu_key_k_offset_dec(key); + if (cpu_key_k_offset(key) == 0) + set_cpu_key_k_type(key, TYPE_STAT_DATA); } - // if it is not first item of the body, then it is mergeable -static int indirect_is_left_mergeable (struct reiserfs_key * key, unsigned long bsize) +static int indirect_is_left_mergeable(struct reiserfs_key *key, + unsigned long bsize) { - int version = le_key_version (key); - return (le_key_k_offset (version, key) != 1); + int version = le_key_version(key); + return (le_key_k_offset(version, key) != 1); } - // printing of indirect item -static void start_new_sequence (__u32 * start, int * len, __u32 new) +static void start_new_sequence(__u32 * start, int *len, __u32 new) { - *start = new; - *len = 1; + *start = new; + *len = 1; } - -static int sequence_finished (__u32 start, int * len, __u32 new) +static int sequence_finished(__u32 start, int *len, __u32 new) { - if (start == INT_MAX) - return 1; + if (start == INT_MAX) + return 1; - if (start == 0 && new == 0) { - (*len) ++; - return 0; - } - if (start != 0 && (start + *len) == new) { - (*len) ++; - return 0; - } - return 1; + if (start == 0 && new == 0) { + (*len)++; + return 0; + } + if (start != 0 && (start + *len) == new) { + (*len)++; + return 0; + } + return 1; } -static void print_sequence (__u32 start, int len) +static void print_sequence(__u32 start, int len) { - if (start == INT_MAX) - return; + if (start == INT_MAX) + return; - if (len == 1) - printk (" %d", start); - else - printk (" %d(%d)", start, len); + if (len == 1) + printk(" %d", start); + else + printk(" %d(%d)", start, len); } - -static void indirect_print_item (struct item_head * ih, char * item) +static void indirect_print_item(struct item_head *ih, char *item) { - int j; - __le32 * unp; - __u32 prev = INT_MAX; - int num; + int j; + __le32 *unp; + __u32 prev = INT_MAX; + int num; - unp = (__le32 *)item; + unp = (__le32 *) item; - if (ih_item_len(ih) % UNFM_P_SIZE) - reiserfs_warning (NULL, "indirect_print_item: invalid item len"); + if (ih_item_len(ih) % UNFM_P_SIZE) + reiserfs_warning(NULL, "indirect_print_item: invalid item len"); - printk ("%d pointers\n[ ", (int)I_UNFM_NUM (ih)); - for (j = 0; j < I_UNFM_NUM (ih); j ++) { - if (sequence_finished (prev, &num, get_block_num(unp, j))) { - print_sequence (prev, num); - start_new_sequence (&prev, &num, get_block_num(unp, j)); + printk("%d pointers\n[ ", (int)I_UNFM_NUM(ih)); + for (j = 0; j < I_UNFM_NUM(ih); j++) { + if (sequence_finished(prev, &num, get_block_num(unp, j))) { + print_sequence(prev, num); + start_new_sequence(&prev, &num, get_block_num(unp, j)); + } } - } - print_sequence (prev, num); - printk ("]\n"); + print_sequence(prev, num); + printk("]\n"); } -static void indirect_check_item (struct item_head * ih, char * item) +static void indirect_check_item(struct item_head *ih, char *item) { - // FIXME: type something here! + // FIXME: type something here! } - -static int indirect_create_vi (struct virtual_node * vn, - struct virtual_item * vi, - int is_affected, - int insert_size) +static int indirect_create_vi(struct virtual_node *vn, + struct virtual_item *vi, + int is_affected, int insert_size) { - vi->vi_index = TYPE_INDIRECT; - //vi->vi_type |= VI_TYPE_INDIRECT; - return 0; + vi->vi_index = TYPE_INDIRECT; + //vi->vi_type |= VI_TYPE_INDIRECT; + return 0; } -static int indirect_check_left (struct virtual_item * vi, int free, - int start_skip, int end_skip) +static int indirect_check_left(struct virtual_item *vi, int free, + int start_skip, int end_skip) { - int bytes; + int bytes; - bytes = free - free % UNFM_P_SIZE; - return bytes ?: -1; + bytes = free - free % UNFM_P_SIZE; + return bytes ? : -1; } - -static int indirect_check_right (struct virtual_item * vi, int free) +static int indirect_check_right(struct virtual_item *vi, int free) { - return indirect_check_left (vi, free, 0, 0); + return indirect_check_left(vi, free, 0, 0); } - - // return size in bytes of 'units' units. If first == 0 - calculate from the head (left), otherwise - from tail (right) -static int indirect_part_size (struct virtual_item * vi, int first, int units) +static int indirect_part_size(struct virtual_item *vi, int first, int units) { - // unit of indirect item is byte (yet) - return units; + // unit of indirect item is byte (yet) + return units; } -static int indirect_unit_num (struct virtual_item * vi) +static int indirect_unit_num(struct virtual_item *vi) { - // unit of indirect item is byte (yet) - return vi->vi_item_len - IH_SIZE; + // unit of indirect item is byte (yet) + return vi->vi_item_len - IH_SIZE; } -static void indirect_print_vi (struct virtual_item * vi) +static void indirect_print_vi(struct virtual_item *vi) { - reiserfs_warning (NULL, "INDIRECT, index %d, type 0x%x, %h", - vi->vi_index, vi->vi_type, vi->vi_ih); + reiserfs_warning(NULL, "INDIRECT, index %d, type 0x%x, %h", + vi->vi_index, vi->vi_type, vi->vi_ih); } static struct item_operations indirect_ops = { - .bytes_number = indirect_bytes_number, - .decrement_key = indirect_decrement_key, - .is_left_mergeable = indirect_is_left_mergeable, - .print_item = indirect_print_item, - .check_item = indirect_check_item, - - .create_vi = indirect_create_vi, - .check_left = indirect_check_left, - .check_right = indirect_check_right, - .part_size = indirect_part_size, - .unit_num = indirect_unit_num, - .print_vi = indirect_print_vi + .bytes_number = indirect_bytes_number, + .decrement_key = indirect_decrement_key, + .is_left_mergeable = indirect_is_left_mergeable, + .print_item = indirect_print_item, + .check_item = indirect_check_item, + + .create_vi = indirect_create_vi, + .check_left = indirect_check_left, + .check_right = indirect_check_right, + .part_size = indirect_part_size, + .unit_num = indirect_unit_num, + .print_vi = indirect_print_vi }; - ////////////////////////////////////////////////////////////////////////////// // direntry functions // - -static int direntry_bytes_number (struct item_head * ih, int block_size) +static int direntry_bytes_number(struct item_head *ih, int block_size) { - reiserfs_warning (NULL, "vs-16090: direntry_bytes_number: " - "bytes number is asked for direntry"); - return 0; -} - -static void direntry_decrement_key (struct cpu_key * key) -{ - cpu_key_k_offset_dec (key); - if (cpu_key_k_offset (key) == 0) - set_cpu_key_k_type (key, TYPE_STAT_DATA); + reiserfs_warning(NULL, "vs-16090: direntry_bytes_number: " + "bytes number is asked for direntry"); + return 0; } - -static int direntry_is_left_mergeable (struct reiserfs_key * key, unsigned long bsize) +static void direntry_decrement_key(struct cpu_key *key) { - if (le32_to_cpu (key->u.k_offset_v1.k_offset) == DOT_OFFSET) - return 0; - return 1; - + cpu_key_k_offset_dec(key); + if (cpu_key_k_offset(key) == 0) + set_cpu_key_k_type(key, TYPE_STAT_DATA); } - -static void direntry_print_item (struct item_head * ih, char * item) +static int direntry_is_left_mergeable(struct reiserfs_key *key, + unsigned long bsize) { - int i; - int namelen; - struct reiserfs_de_head * deh; - char * name; - static char namebuf [80]; - - - printk ("\n # %-15s%-30s%-15s%-15s%-15s\n", "Name", "Key of pointed object", "Hash", "Gen number", "Status"); + if (le32_to_cpu(key->u.k_offset_v1.k_offset) == DOT_OFFSET) + return 0; + return 1; - deh = (struct reiserfs_de_head *)item; +} - for (i = 0; i < I_ENTRY_COUNT (ih); i ++, deh ++) { - namelen = (i ? (deh_location(deh - 1)) : ih_item_len(ih)) - deh_location(deh); - name = item + deh_location(deh); - if (name[namelen-1] == 0) - namelen = strlen (name); - namebuf[0] = '"'; - if (namelen > sizeof (namebuf) - 3) { - strncpy (namebuf + 1, name, sizeof (namebuf) - 3); - namebuf[sizeof (namebuf) - 2] = '"'; - namebuf[sizeof (namebuf) - 1] = 0; - } else { - memcpy (namebuf + 1, name, namelen); - namebuf[namelen + 1] = '"'; - namebuf[namelen + 2] = 0; +static void direntry_print_item(struct item_head *ih, char *item) +{ + int i; + int namelen; + struct reiserfs_de_head *deh; + char *name; + static char namebuf[80]; + + printk("\n # %-15s%-30s%-15s%-15s%-15s\n", "Name", + "Key of pointed object", "Hash", "Gen number", "Status"); + + deh = (struct reiserfs_de_head *)item; + + for (i = 0; i < I_ENTRY_COUNT(ih); i++, deh++) { + namelen = + (i ? (deh_location(deh - 1)) : ih_item_len(ih)) - + deh_location(deh); + name = item + deh_location(deh); + if (name[namelen - 1] == 0) + namelen = strlen(name); + namebuf[0] = '"'; + if (namelen > sizeof(namebuf) - 3) { + strncpy(namebuf + 1, name, sizeof(namebuf) - 3); + namebuf[sizeof(namebuf) - 2] = '"'; + namebuf[sizeof(namebuf) - 1] = 0; + } else { + memcpy(namebuf + 1, name, namelen); + namebuf[namelen + 1] = '"'; + namebuf[namelen + 2] = 0; + } + + printk("%d: %-15s%-15d%-15d%-15Ld%-15Ld(%s)\n", + i, namebuf, + deh_dir_id(deh), deh_objectid(deh), + GET_HASH_VALUE(deh_offset(deh)), + GET_GENERATION_NUMBER((deh_offset(deh))), + (de_hidden(deh)) ? "HIDDEN" : "VISIBLE"); } - - printk ("%d: %-15s%-15d%-15d%-15Ld%-15Ld(%s)\n", - i, namebuf, - deh_dir_id(deh), deh_objectid(deh), - GET_HASH_VALUE (deh_offset (deh)), GET_GENERATION_NUMBER ((deh_offset (deh))), - (de_hidden (deh)) ? "HIDDEN" : "VISIBLE"); - } } - -static void direntry_check_item (struct item_head * ih, char * item) +static void direntry_check_item(struct item_head *ih, char *item) { - int i; - struct reiserfs_de_head * deh; + int i; + struct reiserfs_de_head *deh; - // FIXME: type something here! - deh = (struct reiserfs_de_head *)item; - for (i = 0; i < I_ENTRY_COUNT (ih); i ++, deh ++) { - ; - } + // FIXME: type something here! + deh = (struct reiserfs_de_head *)item; + for (i = 0; i < I_ENTRY_COUNT(ih); i++, deh++) { + ; + } } - - #define DIRENTRY_VI_FIRST_DIRENTRY_ITEM 1 /* * function returns old entry number in directory item in real node * using new entry number in virtual item in virtual node */ -static inline int old_entry_num (int is_affected, int virtual_entry_num, int pos_in_item, int mode) +static inline int old_entry_num(int is_affected, int virtual_entry_num, + int pos_in_item, int mode) { - if ( mode == M_INSERT || mode == M_DELETE) - return virtual_entry_num; - - if (!is_affected) - /* cut or paste is applied to another item */ - return virtual_entry_num; - - if (virtual_entry_num < pos_in_item) - return virtual_entry_num; + if (mode == M_INSERT || mode == M_DELETE) + return virtual_entry_num; - if (mode == M_CUT) - return virtual_entry_num + 1; + if (!is_affected) + /* cut or paste is applied to another item */ + return virtual_entry_num; - RFALSE( mode != M_PASTE || virtual_entry_num == 0, - "vs-8015: old_entry_num: mode must be M_PASTE (mode = \'%c\'", mode); - - return virtual_entry_num - 1; -} + if (virtual_entry_num < pos_in_item) + return virtual_entry_num; + if (mode == M_CUT) + return virtual_entry_num + 1; + RFALSE(mode != M_PASTE || virtual_entry_num == 0, + "vs-8015: old_entry_num: mode must be M_PASTE (mode = \'%c\'", + mode); + return virtual_entry_num - 1; +} /* Create an array of sizes of directory entries for virtual item. Return space used by an item. FIXME: no control over consuming of space used by this item handler */ -static int direntry_create_vi (struct virtual_node * vn, - struct virtual_item * vi, - int is_affected, - int insert_size) -{ - struct direntry_uarea * dir_u = vi->vi_uarea; - int i, j; - int size = sizeof (struct direntry_uarea); - struct reiserfs_de_head * deh; - - vi->vi_index = TYPE_DIRENTRY; - - if (!(vi->vi_ih) || !vi->vi_item) - BUG (); - - - dir_u->flags = 0; - if (le_ih_k_offset (vi->vi_ih) == DOT_OFFSET) - dir_u->flags |= DIRENTRY_VI_FIRST_DIRENTRY_ITEM; - - deh = (struct reiserfs_de_head *)(vi->vi_item); - - - /* virtual directory item have this amount of entry after */ - dir_u->entry_count = ih_entry_count (vi->vi_ih) + - ((is_affected) ? ((vn->vn_mode == M_CUT) ? -1 : - (vn->vn_mode == M_PASTE ? 1 : 0)) : 0); - - for (i = 0; i < dir_u->entry_count; i ++) { - j = old_entry_num (is_affected, i, vn->vn_pos_in_item, vn->vn_mode); - dir_u->entry_sizes[i] = (j ? deh_location( &(deh[j - 1]) ) : - ih_item_len (vi->vi_ih)) - - deh_location( &(deh[j])) + DEH_SIZE; - } - - size += (dir_u->entry_count * sizeof (short)); - - /* set size of pasted entry */ - if (is_affected && vn->vn_mode == M_PASTE) - dir_u->entry_sizes[vn->vn_pos_in_item] = insert_size; +static int direntry_create_vi(struct virtual_node *vn, + struct virtual_item *vi, + int is_affected, int insert_size) +{ + struct direntry_uarea *dir_u = vi->vi_uarea; + int i, j; + int size = sizeof(struct direntry_uarea); + struct reiserfs_de_head *deh; + vi->vi_index = TYPE_DIRENTRY; + + if (!(vi->vi_ih) || !vi->vi_item) + BUG(); + + dir_u->flags = 0; + if (le_ih_k_offset(vi->vi_ih) == DOT_OFFSET) + dir_u->flags |= DIRENTRY_VI_FIRST_DIRENTRY_ITEM; + + deh = (struct reiserfs_de_head *)(vi->vi_item); + + /* virtual directory item have this amount of entry after */ + dir_u->entry_count = ih_entry_count(vi->vi_ih) + + ((is_affected) ? ((vn->vn_mode == M_CUT) ? -1 : + (vn->vn_mode == M_PASTE ? 1 : 0)) : 0); + + for (i = 0; i < dir_u->entry_count; i++) { + j = old_entry_num(is_affected, i, vn->vn_pos_in_item, + vn->vn_mode); + dir_u->entry_sizes[i] = + (j ? deh_location(&(deh[j - 1])) : ih_item_len(vi->vi_ih)) - + deh_location(&(deh[j])) + DEH_SIZE; + } + + size += (dir_u->entry_count * sizeof(short)); + + /* set size of pasted entry */ + if (is_affected && vn->vn_mode == M_PASTE) + dir_u->entry_sizes[vn->vn_pos_in_item] = insert_size; #ifdef CONFIG_REISERFS_CHECK - /* compare total size of entries with item length */ - { - int k, l; - - l = 0; - for (k = 0; k < dir_u->entry_count; k ++) - l += dir_u->entry_sizes[k]; - - if (l + IH_SIZE != vi->vi_item_len + - ((is_affected && (vn->vn_mode == M_PASTE || vn->vn_mode == M_CUT)) ? insert_size : 0) ) { - reiserfs_panic (NULL, "vs-8025: set_entry_sizes: (mode==%c, insert_size==%d), invalid length of directory item", - vn->vn_mode, insert_size); + /* compare total size of entries with item length */ + { + int k, l; + + l = 0; + for (k = 0; k < dir_u->entry_count; k++) + l += dir_u->entry_sizes[k]; + + if (l + IH_SIZE != vi->vi_item_len + + ((is_affected + && (vn->vn_mode == M_PASTE + || vn->vn_mode == M_CUT)) ? insert_size : 0)) { + reiserfs_panic(NULL, + "vs-8025: set_entry_sizes: (mode==%c, insert_size==%d), invalid length of directory item", + vn->vn_mode, insert_size); + } } - } #endif - return size; - + return size; } - // // return number of entries which may fit into specified amount of // free space, or -1 if free space is not enough even for 1 entry // -static int direntry_check_left (struct virtual_item * vi, int free, - int start_skip, int end_skip) +static int direntry_check_left(struct virtual_item *vi, int free, + int start_skip, int end_skip) { - int i; - int entries = 0; - struct direntry_uarea * dir_u = vi->vi_uarea; + int i; + int entries = 0; + struct direntry_uarea *dir_u = vi->vi_uarea; - for (i = start_skip; i < dir_u->entry_count - end_skip; i ++) { - if (dir_u->entry_sizes[i] > free) - /* i-th entry doesn't fit into the remaining free space */ - break; - - free -= dir_u->entry_sizes[i]; - entries ++; - } + for (i = start_skip; i < dir_u->entry_count - end_skip; i++) { + if (dir_u->entry_sizes[i] > free) + /* i-th entry doesn't fit into the remaining free space */ + break; - if (entries == dir_u->entry_count) { - reiserfs_panic (NULL, "free space %d, entry_count %d\n", free, dir_u->entry_count); - } + free -= dir_u->entry_sizes[i]; + entries++; + } - /* "." and ".." can not be separated from each other */ - if (start_skip == 0 && (dir_u->flags & DIRENTRY_VI_FIRST_DIRENTRY_ITEM) && entries < 2) - entries = 0; - - return entries ?: -1; -} + if (entries == dir_u->entry_count) { + reiserfs_panic(NULL, "free space %d, entry_count %d\n", free, + dir_u->entry_count); + } + /* "." and ".." can not be separated from each other */ + if (start_skip == 0 && (dir_u->flags & DIRENTRY_VI_FIRST_DIRENTRY_ITEM) + && entries < 2) + entries = 0; -static int direntry_check_right (struct virtual_item * vi, int free) + return entries ? : -1; +} + +static int direntry_check_right(struct virtual_item *vi, int free) { - int i; - int entries = 0; - struct direntry_uarea * dir_u = vi->vi_uarea; - - for (i = dir_u->entry_count - 1; i >= 0; i --) { - if (dir_u->entry_sizes[i] > free) - /* i-th entry doesn't fit into the remaining free space */ - break; - - free -= dir_u->entry_sizes[i]; - entries ++; - } - if (entries == dir_u->entry_count) - BUG (); + int i; + int entries = 0; + struct direntry_uarea *dir_u = vi->vi_uarea; - /* "." and ".." can not be separated from each other */ - if ((dir_u->flags & DIRENTRY_VI_FIRST_DIRENTRY_ITEM) && entries > dir_u->entry_count - 2) - entries = dir_u->entry_count - 2; + for (i = dir_u->entry_count - 1; i >= 0; i--) { + if (dir_u->entry_sizes[i] > free) + /* i-th entry doesn't fit into the remaining free space */ + break; - return entries ?: -1; -} + free -= dir_u->entry_sizes[i]; + entries++; + } + if (entries == dir_u->entry_count) + BUG(); + /* "." and ".." can not be separated from each other */ + if ((dir_u->flags & DIRENTRY_VI_FIRST_DIRENTRY_ITEM) + && entries > dir_u->entry_count - 2) + entries = dir_u->entry_count - 2; + + return entries ? : -1; +} /* sum of entry sizes between from-th and to-th entries including both edges */ -static int direntry_part_size (struct virtual_item * vi, int first, int count) +static int direntry_part_size(struct virtual_item *vi, int first, int count) { - int i, retval; - int from, to; - struct direntry_uarea * dir_u = vi->vi_uarea; - - retval = 0; - if (first == 0) - from = 0; - else - from = dir_u->entry_count - count; - to = from + count - 1; + int i, retval; + int from, to; + struct direntry_uarea *dir_u = vi->vi_uarea; - for (i = from; i <= to; i ++) - retval += dir_u->entry_sizes[i]; + retval = 0; + if (first == 0) + from = 0; + else + from = dir_u->entry_count - count; + to = from + count - 1; - return retval; -} + for (i = from; i <= to; i++) + retval += dir_u->entry_sizes[i]; -static int direntry_unit_num (struct virtual_item * vi) -{ - struct direntry_uarea * dir_u = vi->vi_uarea; - - return dir_u->entry_count; + return retval; } +static int direntry_unit_num(struct virtual_item *vi) +{ + struct direntry_uarea *dir_u = vi->vi_uarea; + return dir_u->entry_count; +} -static void direntry_print_vi (struct virtual_item * vi) +static void direntry_print_vi(struct virtual_item *vi) { - int i; - struct direntry_uarea * dir_u = vi->vi_uarea; + int i; + struct direntry_uarea *dir_u = vi->vi_uarea; - reiserfs_warning (NULL, "DIRENTRY, index %d, type 0x%x, %h, flags 0x%x", - vi->vi_index, vi->vi_type, vi->vi_ih, dir_u->flags); - printk ("%d entries: ", dir_u->entry_count); - for (i = 0; i < dir_u->entry_count; i ++) - printk ("%d ", dir_u->entry_sizes[i]); - printk ("\n"); + reiserfs_warning(NULL, "DIRENTRY, index %d, type 0x%x, %h, flags 0x%x", + vi->vi_index, vi->vi_type, vi->vi_ih, dir_u->flags); + printk("%d entries: ", dir_u->entry_count); + for (i = 0; i < dir_u->entry_count; i++) + printk("%d ", dir_u->entry_sizes[i]); + printk("\n"); } static struct item_operations direntry_ops = { - .bytes_number = direntry_bytes_number, - .decrement_key = direntry_decrement_key, - .is_left_mergeable = direntry_is_left_mergeable, - .print_item = direntry_print_item, - .check_item = direntry_check_item, - - .create_vi = direntry_create_vi, - .check_left = direntry_check_left, - .check_right = direntry_check_right, - .part_size = direntry_part_size, - .unit_num = direntry_unit_num, - .print_vi = direntry_print_vi + .bytes_number = direntry_bytes_number, + .decrement_key = direntry_decrement_key, + .is_left_mergeable = direntry_is_left_mergeable, + .print_item = direntry_print_item, + .check_item = direntry_check_item, + + .create_vi = direntry_create_vi, + .check_left = direntry_check_left, + .check_right = direntry_check_right, + .part_size = direntry_part_size, + .unit_num = direntry_unit_num, + .print_vi = direntry_print_vi }; - ////////////////////////////////////////////////////////////////////////////// // Error catching functions to catch errors caused by incorrect item types. // -static int errcatch_bytes_number (struct item_head * ih, int block_size) +static int errcatch_bytes_number(struct item_head *ih, int block_size) { - reiserfs_warning (NULL, "green-16001: Invalid item type observed, run fsck ASAP"); - return 0; + reiserfs_warning(NULL, + "green-16001: Invalid item type observed, run fsck ASAP"); + return 0; } -static void errcatch_decrement_key (struct cpu_key * key) +static void errcatch_decrement_key(struct cpu_key *key) { - reiserfs_warning (NULL, "green-16002: Invalid item type observed, run fsck ASAP"); + reiserfs_warning(NULL, + "green-16002: Invalid item type observed, run fsck ASAP"); } - -static int errcatch_is_left_mergeable (struct reiserfs_key * key, unsigned long bsize) +static int errcatch_is_left_mergeable(struct reiserfs_key *key, + unsigned long bsize) { - reiserfs_warning (NULL, "green-16003: Invalid item type observed, run fsck ASAP"); - return 0; + reiserfs_warning(NULL, + "green-16003: Invalid item type observed, run fsck ASAP"); + return 0; } - -static void errcatch_print_item (struct item_head * ih, char * item) +static void errcatch_print_item(struct item_head *ih, char *item) { - reiserfs_warning (NULL, "green-16004: Invalid item type observed, run fsck ASAP"); + reiserfs_warning(NULL, + "green-16004: Invalid item type observed, run fsck ASAP"); } - -static void errcatch_check_item (struct item_head * ih, char * item) +static void errcatch_check_item(struct item_head *ih, char *item) { - reiserfs_warning (NULL, "green-16005: Invalid item type observed, run fsck ASAP"); + reiserfs_warning(NULL, + "green-16005: Invalid item type observed, run fsck ASAP"); } -static int errcatch_create_vi (struct virtual_node * vn, - struct virtual_item * vi, - int is_affected, - int insert_size) +static int errcatch_create_vi(struct virtual_node *vn, + struct virtual_item *vi, + int is_affected, int insert_size) { - reiserfs_warning (NULL, "green-16006: Invalid item type observed, run fsck ASAP"); - return 0; // We might return -1 here as well, but it won't help as create_virtual_node() from where - // this operation is called from is of return type void. + reiserfs_warning(NULL, + "green-16006: Invalid item type observed, run fsck ASAP"); + return 0; // We might return -1 here as well, but it won't help as create_virtual_node() from where + // this operation is called from is of return type void. } -static int errcatch_check_left (struct virtual_item * vi, int free, - int start_skip, int end_skip) +static int errcatch_check_left(struct virtual_item *vi, int free, + int start_skip, int end_skip) { - reiserfs_warning (NULL, "green-16007: Invalid item type observed, run fsck ASAP"); - return -1; + reiserfs_warning(NULL, + "green-16007: Invalid item type observed, run fsck ASAP"); + return -1; } - -static int errcatch_check_right (struct virtual_item * vi, int free) +static int errcatch_check_right(struct virtual_item *vi, int free) { - reiserfs_warning (NULL, "green-16008: Invalid item type observed, run fsck ASAP"); - return -1; + reiserfs_warning(NULL, + "green-16008: Invalid item type observed, run fsck ASAP"); + return -1; } -static int errcatch_part_size (struct virtual_item * vi, int first, int count) +static int errcatch_part_size(struct virtual_item *vi, int first, int count) { - reiserfs_warning (NULL, "green-16009: Invalid item type observed, run fsck ASAP"); - return 0; + reiserfs_warning(NULL, + "green-16009: Invalid item type observed, run fsck ASAP"); + return 0; } -static int errcatch_unit_num (struct virtual_item * vi) +static int errcatch_unit_num(struct virtual_item *vi) { - reiserfs_warning (NULL, "green-16010: Invalid item type observed, run fsck ASAP"); - return 0; + reiserfs_warning(NULL, + "green-16010: Invalid item type observed, run fsck ASAP"); + return 0; } -static void errcatch_print_vi (struct virtual_item * vi) +static void errcatch_print_vi(struct virtual_item *vi) { - reiserfs_warning (NULL, "green-16011: Invalid item type observed, run fsck ASAP"); + reiserfs_warning(NULL, + "green-16011: Invalid item type observed, run fsck ASAP"); } static struct item_operations errcatch_ops = { - errcatch_bytes_number, - errcatch_decrement_key, - errcatch_is_left_mergeable, - errcatch_print_item, - errcatch_check_item, - - errcatch_create_vi, - errcatch_check_left, - errcatch_check_right, - errcatch_part_size, - errcatch_unit_num, - errcatch_print_vi + errcatch_bytes_number, + errcatch_decrement_key, + errcatch_is_left_mergeable, + errcatch_print_item, + errcatch_check_item, + + errcatch_create_vi, + errcatch_check_left, + errcatch_check_right, + errcatch_part_size, + errcatch_unit_num, + errcatch_print_vi }; - - ////////////////////////////////////////////////////////////////////////////// // // #if ! (TYPE_STAT_DATA == 0 && TYPE_INDIRECT == 1 && TYPE_DIRECT == 2 && TYPE_DIRENTRY == 3) - do not compile +#error Item types must use disk-format assigned values. #endif -struct item_operations * item_ops [TYPE_ANY + 1] = { - &stat_data_ops, - &indirect_ops, - &direct_ops, - &direntry_ops, - NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, - &errcatch_ops /* This is to catch errors with invalid type (15th entry for TYPE_ANY) */ +struct item_operations *item_ops[TYPE_ANY + 1] = { + &stat_data_ops, + &indirect_ops, + &direct_ops, + &direntry_ops, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + &errcatch_ops /* This is to catch errors with invalid type (15th entry for TYPE_ANY) */ }; - - - - |
